F 350 4WD Super Duty V10-6.8L VIN Z CNG (2003)
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P1380 - P1384: Testing and Inspection
P1383
For diagnosis of code P1383 refer to chart
P1137 - P1400
If there is no link in the chart then:
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This code is not a valid code for this vehicle
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Or information published by the manufacturer for this vehicle did not include this code
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For complete diagnosis of the Engine Control system, follow this link: See: Powertrain Management/Computers and Control Systems/Testing and